还记得雪橇在平滑冰面上的滑行么。
图像可以通过黑白复印，彩色复印打印在平滑的原料上。
They can be made from black and white copies, color copies and printed images on glossy stock.
应调整好喷涂设备以便涂敷操作可以在平滑均匀的涂层上进行。
The spray equipment shall be adjusted so that coating is applied in a smooth and uniform coat.
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